A rapid and reliable immunochromatographic strip for detecting paraquat poinsoning in domestic water and real human samples
2022
Fu, Guanyan | Duan, Yu | Yi, Weijing | Zhang, Shun | Liang, Wenbin | Li, Brenda W. L. (Brenda Wai Ling) | Yan, Huifang | Wu, Banghua | Fu, Sheng | Zhang, Jing | Zhang, Gen | Wang, Guixue | Liu, Yongsheng | Xu, Shangcheng
Paraquat (PQ) is one of the most commonly used herbicides, but it has polluted the environment and threatened human health through extensive and improper usage. Here, a new naked-eye PQ immunochromatographic strip was developed to recognize PQ in domestic water and real human samples within 10 min based on a novel custom-designed anti-PQ antibody. The PQ test strip could recognize PQ at a concentration as low as 10 ng/ml, reaching the high-efficiency time-of-flight mass spectrometry detection level and identifying trace amounts of PQ in samples treated with a diquat (DQ) and PQ mixture. Notably, both the performance evaluation and clinical trial of the proposed PQ strips were validated in multiple hospitals and public health agencies. Taken together, our study firstly provide the clinical PQ-targeted colloidal gold immunochromatographic test strip designed both for environment water and human sample detection with multiple advantages, which are ready for environmental monitoring and clinical practice.
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